In December, it emerged that Mercedes had found a possible loophole in the rules that could lead to a performance advantage.

The FIA confirmed the update following discussions within the sport’s Power Unit Advisory Committee. Under the 2026 ...

Formula 1's five power unit manufacturers are set to vote on a proposed tweak to how engine compression ratios are measured, ...

Formula One’s governing body, the FIA, has reached a compromise with power unit manufacturers to tighten how engine ...

We may receive a commission on purchases made from links. While browsing auto repair and maintenance tools at your local parts store, you've likely come across compression testers like the Orion Motor ...

We may receive a commission on purchases made from links. I have been working on my own vehicles for almost 40 years and in that time have accumulated a sizable collection of tools. The bulk of them ...

The FIA has updated the 2026 F1 engine rules, changing how compression ratios are measured to prevent loopholes.

A revised test at 130°C aims to end off-season speculation — but could shift the debate into 2027.